JPS59205247A - Carriage feeder for machine tool - Google Patents
Carriage feeder for machine toolInfo
- Publication number
- JPS59205247A JPS59205247A JP7825583A JP7825583A JPS59205247A JP S59205247 A JPS59205247 A JP S59205247A JP 7825583 A JP7825583 A JP 7825583A JP 7825583 A JP7825583 A JP 7825583A JP S59205247 A JPS59205247 A JP S59205247A
- Authority
- JP
- Japan
- Prior art keywords
- base
- center
- column
- moving body
- vertical line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
- B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は工作機械に使用されるテーブル等の移動体を高
精度に移動させるための送り装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a feeding device for moving a moving body such as a table used in a machine tool with high precision.
従来たとえば研削機械においては、第１図に示す如く、
ベット１上の端部に固定され、上面に被加工物（図示せ
ず）を塔載するテーブル２を同図に対して前後方向に移
動自在に支持するテーブルベース３と、摺動面１ａ上を
矢印方向に移動自在に支持され上面にコラム４を固定す
るコラムベース５とを設けている。Conventionally, for example, in a grinding machine, as shown in Fig. 1,
A table base 3 is fixed to the end of the bed 1 and supports a table 2 on which a workpiece (not shown) is mounted on the upper surface thereof so as to be movable in the front and back direction with respect to the figure, and A column base 5 is provided which is movably supported in the direction of the arrow and has a column 4 fixed to its upper surface.
また上記テーブルベース３には、スラスト軸受６を介し
て軸方向のみ固定支持され、後端部に操作ハンドル７を
固定し、先端部に上記コラムベース５の端面に固定され
たナツト８に螺合支持された送りネジ９を設けている。Further, the table base 3 is fixedly supported only in the axial direction via a thrust bearing 6, an operating handle 7 is fixed to the rear end, and a nut 8 fixed to the end face of the column base 5 is screwed to the tip. A supported lead screw 9 is provided.
さらに上記コラム４には上下方向に移動自在に支持され
、砥石車１０を回転自在に支持する軸頭１１を設けたも
のが実施されている。Further, the column 4 is supported to be movable in the vertical direction, and is provided with a shaft head 11 that rotatably supports the grinding wheel 10.
而して上記の構成においては、操作ハンドル７を回転し
、送りネジ９を回転するとナツト８を介してコラムベー
ス５がベット１の摺動面１ａ上を矢印方向に摺動するが
、このときコラムベース５の摺動面５ａは第２図に第１
図の力学説明図を示す如く、該コラムベース５およびこ
れに塔載されたコラム４、砥石車１０および軸頭１１等
の全重量Ｗに上記両用動面１ａ。In the above configuration, when the operating handle 7 is rotated and the feed screw 9 is rotated, the column base 5 slides on the sliding surface 1a of the bed 1 in the direction of the arrow via the nut 8. The sliding surface 5a of the column base 5 is shown in FIG.
As shown in the mechanical explanatory diagram of the figure, the total weight W of the column base 5, the column 4 mounted thereon, the grinding wheel 10, the shaft head 11, etc. is combined with the dual-use moving surface 1a.
５ａ間の摩擦係数μを乗じた摩擦力μＷが上記コラムベ
ース５およびこわに塔載されたコラム４、砥石車１０お
よび軸頭１１等からなる重心位置Ｏ１をきおる垂直線Ｙ
−Ｙ （！：ベース１の摺動面１ａとの交点０２を中心
にして矢印方向に移動する。また送りネジ９の軸方向を
支持するスラスト軸受６には上記両摺動面１ａ、５ａに
加わる摩擦力μＷと略同−の大きさの摩擦力μＷ′が逆
方向に作用する。これら両摩擦力μ界μＷ′の作用位置
からベット１の中立軸Ｘ−Ｘまでの高さを夫々ｈｘ ｈ
＋とするき、上記ベット１の中立軸Ｘ−Ｘ線における上
記摩擦力中心点０２の下方位置にはμＷｈ１のモーメン
）Ｍｌが作用し、ベット１の左端部にはμＷ’ｈ２のモ
ーメン） Ｍｌが夫々作用するので、上記コラムベース
５が左方向に移動するときには、ベット１の左端部から
摩擦力中心点までの長さ１間に一点鎖線にて示す如く撓
み量δｌをもって湾曲現象を発生し、上記コラムベース
５が右方向に移動するときには、点線にて示す如く撓み
量δ２をもって湾曲現象を発生する。そのため、こね、
らのベット１の湾曲現象が砥石車１ｏの研削面を傾斜さ
せ砥石車１０の研削面を送り方向によって異なる紅路で
被加工物を研削させるので、被加工物の被研削面には送
り目を発生したり、研削時の砥石車１０の研削面に加わ
る抵抗の変化によって被加工物の被研削面が凸凹に研削
されたりして研削精度の低下をきたしている。A vertical line Y along which the frictional force μW multiplied by the friction coefficient μ between the columns 5a and 5a passes through the center of gravity O1 consisting of the column base 5, the column 4 mounted on the column, the grinding wheel 10, the shaft head 11, etc.
-Y (!: Moves in the direction of the arrow around the intersection 02 with the sliding surface 1a of the base 1. Also, the thrust bearing 6 that supports the axial direction of the feed screw 9 is attached to both the sliding surfaces 1a and 5a. A frictional force μW' of approximately the same magnitude as the applied frictional force μW acts in the opposite direction.The height from the acting position of both these frictional forces μ field μW' to the neutral axis XX of the bed 1 is hx. h
+, a moment of μWh1) Ml acts on the position below the center point 02 of the frictional force on the neutral axis XX line of the bet 1, and a moment of μW'h2) Ml acts on the left end of the bet 1. When the column base 5 moves to the left, a bending phenomenon occurs with a deflection amount δl as shown by the dashed line during the length 1 from the left end of the bed 1 to the center point of the frictional force. When the column base 5 moves to the right, a bending phenomenon occurs with a deflection amount δ2 as shown by the dotted line. Therefore, knead,
The curvature phenomenon of the bed 1 causes the grinding surface of the grinding wheel 1o to incline, and the grinding surface of the grinding wheel 10 grinds the workpiece with different red paths depending on the feed direction, so that the grinding surface of the workpiece has a feed mark. The grinding precision of the workpiece is reduced due to the grinding surface of the workpiece being ground unevenly due to changes in the resistance applied to the grinding surface of the grinding wheel 10 during grinding.
そこで、上記の欠点を除去するため上記モーメントＭＩ
Ｍ２を減少する方法として上記ベット１の摺動面１ａを
コロガリ案内面にして摩擦係数を少なくするこさが考え
られるが、この場合には、研削振動の吸振性が低下しか
つ製作費が高くなって不利である。また上記摩擦力μＷ
、μＷ′の作用位置からベット１の中立軸Ｘ−Ｘまでの
高さｈｌｈ２を小さくすることが考えられるが、この場
合には剛性等から実際上困難である。Therefore, in order to eliminate the above drawback, the moment MI
One possible way to reduce M2 is to use the sliding surface 1a of the bed 1 as a rolling guide surface to reduce the coefficient of friction, but in this case, the absorption of grinding vibrations will decrease and the manufacturing cost will increase. It is disadvantageous. In addition, the above frictional force μW
, μW' may be considered to reduce the height hlh2 from the acting position to the neutral axis XX of the bed 1, but in this case it is practically difficult due to rigidity and the like.
本発明は上記従来の欠点を除去し、高精度・ ３ ・
の研削を可能とする工作機械における移動体の送り装置
を提供することにある。An object of the present invention is to provide a moving body feeding device for a machine tool that eliminates the above-mentioned conventional drawbacks and enables high-precision grinding.
即ち上記第１図に示す従来の構成におけるベット１の撓
み量δは昭和４８年１月２５日丸善株式会社発行の「新
版機械設計便覧第７１３頁第６．２表梁の図表、番号７
」を引用すればで与えられる。なお上式において、ｙは
ベットの端部から距ｌｉｘにおける撓み、ＤＩは曲げ剛
性、ｌはスラスト軸受と摩擦力の中心までの距離、Ｍｓ
Ｍ２はベットの両端部の曲げモーメントである。That is, the amount of deflection δ of the bed 1 in the conventional configuration shown in FIG.
'' is given by. In the above equation, y is the deflection at the distance lix from the end of the bed, DI is the bending rigidity, l is the distance between the thrust bearing and the center of friction force, Ms
M2 is the bending moment at both ends of the bed.
また上式におけるモーメン） ＭＩＭｚを同一にし、Ｘ
を４とした場合上式はつぎの如くになる。In addition, the moment in the above equation) MIMz should be the same, and X
When is set to 4, the above equation becomes as follows.
上式から明らかな如く撓みｙを減少するためにはｌを小
さくすることが効果的である。As is clear from the above equation, it is effective to reduce l in order to reduce the deflection y.
そこで、本発明は上記のｌを少くしかつ上記・ ４ ・
の目的を達成するため移動体が移動することによって該
移動体と、これを支持する支持体との間に発生する摩擦
力の中心点即ち移動体の重心位置を通る垂直線が水平方
向に移動する量の約Ｖ２の位置における該垂直線上の所
定点を設定し、この設定点に上記摩擦力に対する反力機
構を設けたことを特徴とするものである。Therefore, in order to reduce the above l and achieve the above objects, the present invention aims to reduce the center of the frictional force generated between the moving body and the supporting body that supports it when the moving body moves. That is, a predetermined point on the vertical line is set at a position of approximately V2 of the horizontal movement of the vertical line passing through the center of gravity of the moving body, and a reaction force mechanism against the frictional force is provided at this set point. This is a characteristic feature.
以下本発明の実施例を示す第３図乃至第６図について説
明する。3 to 6 showing embodiments of the present invention will be explained below.
はスラスト軸受６の取付位置以外は従来と同一であるか
ら当該部分は第１図および第２図と同一符号をもって示
す。Since this is the same as the conventional one except for the mounting position of the thrust bearing 6, the relevant parts are designated by the same reference numerals as in FIGS. 1 and 2.
而して同図におけるスラスト軸受６はコラムベース５、
コラム４、砥石車１０および軸頭１１等からなる重心位
置０１を通る垂直線とベース１の摺動面１ａとの交点０
２を中心にして移動する距離Ｓの１／２に相当するベー
ス１に固定さＩ″ｌ、送りネジ９の先端部で軸方向のみ
固定する如く支持している。Therefore, the thrust bearing 6 in the same figure is the column base 5,
Intersection point 0 of the vertical line passing through the center of gravity position 01 consisting of the column 4, grinding wheel 10, shaft head 11, etc. and the sliding surface 1a of the base 1
It is fixed to the base 1 corresponding to 1/2 of the distance S to be moved about 2 as the center, and is supported by the tip of the feed screw 9 so as to be fixed only in the axial direction.
上記の構成であるから、操作ノ１ンドル７を回転し、送
りネジ９およびナツト８を介してコラムベース５をベッ
ト１の摺動面１ａ上を矢印方向に摺動すると、コラムベ
ース５の摺動面５ａにはコラムベース５、コラム４、砥
石車１０および軸頭１１等の全重量Ｗに上記両用動面ｌ
ａ、５ａ間の摩擦係数μを乗じた摩擦力μＷが上記交点
０２を中心にして距離８間移動する。With the above configuration, when the operation knob 1 is rotated and the column base 5 is slid on the sliding surface 1a of the bed 1 in the direction of the arrow via the feed screw 9 and the nut 8, the sliding of the column base 5 On the moving surface 5a, the total weight W of the column base 5, column 4, grinding wheel 10, shaft head 11, etc. and the dual-use moving surface l are attached.
The friction force μW multiplied by the friction coefficient μ between a and 5a moves a distance of 8 with the intersection 02 as the center.
また上記スラスト軸受６には上記の摩擦力μＷと略同−
の大きさの摩擦力μＷ′が逆方向に作用する。そしてこ
れら両摩擦力μＷ、μＷ′が該ト１の摩擦中心位置Ｏと
、ベット１の左端部に夫々μＷｈ１およびμＷ′ｈ２の
モーメントＭｌ、Ｍ２が作用する。Furthermore, the thrust bearing 6 has a force approximately equal to the frictional force μW described above.
A frictional force μW' of magnitude acts in the opposite direction. These two frictional forces μW and μW' act on the friction center position O of the toe 1 and moments M1 and M2 of μWh1 and μW'h2 on the left end of the bed 1, respectively.
しかしながら、上記コラムベース５が矢印方向に移動す
る量は、上記スラスト軸受６を中心にしてその両側にＶ
２Ｓであるから、上記モーメン）ＭＩＭ２によってベー
ス１に発生する撓み量δ１δ２を極小にすることができ
る。However, the amount by which the column base 5 moves in the direction of the arrow is limited to the amount that the column base 5 moves in the direction of the arrow.
2S, the amount of deflection δ1δ2 generated in the base 1 by the above-mentioned moment) MIM2 can be minimized.
つぎに第４図は本発明を研削機械に実施した場合の他の
１例を示す一部断面図、第５図は第４図のＡ矢視方向正
面図、第６図は第４図のＢ矢視方向平面図である。なお
同図において、第３図と同一部品は第３図と同一符号を
もって示す。Next, FIG. 4 is a partial sectional view showing another example of the present invention applied to a grinding machine, FIG. 5 is a front view in the direction of arrow A in FIG. 4, and FIG. It is a top view in the direction of arrow B. In this figure, the same parts as in FIG. 3 are indicated by the same symbols as in FIG. 3.
同図において１２はタイロッドにして、２個平行に配置
さね１、一端部をベース１の左端部近くに設定されたス
ラスト軸受７の両端部に固定支持され、他端部を上記コ
ラムベース５、コラム４、軸頭１１、砥石車１０等の全
重量Ｗの重心位置を通る垂直線Ｙ−Ｙの移動量の１４に
和尚する位置にベース１に固定されたブラケット１３に
て固定支持されている。In the same figure, reference numeral 12 designates tie rods, two of which are arranged parallel to each other. , the column 4, the shaft head 11, the grinding wheel 10, etc., are fixedly supported by a bracket 13 fixed to the base 1 at a position corresponding to the amount of movement 14 along a vertical line Y-Y passing through the center of gravity of the total weight W of the column 4, shaft head 11, grinding wheel 10, etc. There is.
上記の構成であるから、スラスト軸受６はベース１の左
端部近くに設置しているが、タイロッド１３を介してブ
ラケット１３にコラムベース５の移動に伴なう摩擦力μ
Ｗに対応する摩擦力／ＪＷ’が作用するので、第３図と
同様ベース１に発生する撓み量を極小にすることができ
る。Because of the above configuration, the thrust bearing 6 is installed near the left end of the base 1, but the friction force μ caused by the movement of the column base 5 is applied to the bracket 13 via the tie rod 13.
Since the frictional force /JW' corresponding to W acts, the amount of deflection generated in the base 1 can be minimized as in FIG. 3.
したがって本発明においては研削時延石車１０の研削面
が傾斜して送り方向により異なる経路で被加工物を研削
する鼾のを防止し、かつ砥石車１０の研削面に加わる抵
抗の変化を防止して研削精度を向上することができる。Therefore, in the present invention, the grinding surface of the grinding wheel 10 is tilted during grinding to prevent grinding of the workpiece in different paths depending on the feed direction, and also to prevent changes in the resistance applied to the grinding surface of the grinding wheel 10. can improve grinding accuracy.
第１図は従来の研削機械の１例を示す側面図、第２図は
その力学的説明図、第３図は本発明を実施した研削機械
の１例を示す側面図、第４図は研削機械の他の１例を示
す側面図、第５図は第４図のＡ矢視方向正面図、第６図
は第４図のＢ矢視方向平面図である。
１・・・ベース、２・・・テーブル、３・・・テーブル
ベース、４・・・コラム、５・・・コラムベース、６・
・・スラスト軸受、７・・・操作ハンドル、８・・・ナ
ツト、９・・・送りネジ、１０・・・砥石車、１１・・
・軸頭、・ ８ ・
代理人 弁理士 高橋明夫
＄１図
／／
＄２図
＄３図
σ ６
＄４図
２９６
＄５図
＄６図Fig. 1 is a side view showing an example of a conventional grinding machine, Fig. 2 is a mechanical explanatory diagram thereof, Fig. 3 is a side view showing an example of a grinding machine embodying the present invention, and Fig. 4 is a side view showing an example of a grinding machine according to the present invention. 5 is a side view showing another example of the machine, FIG. 5 is a front view in the direction of arrow A in FIG. 4, and FIG. 6 is a plan view in the direction of arrow B in FIG. 4. 1...Base, 2...Table, 3...Table base, 4...Column, 5...Column base, 6...
... Thrust bearing, 7... Operation handle, 8... Nut, 9... Feed screw, 10... Grinding wheel, 11...
・Axis head,・ 8 ・ Agent Patent attorney Akio Takahashi $1 figure // $2 figure $3 figure σ 6 $4 figure 296 $5 figure $6 figure
Claims (1)
られた工具により被加工物を加工する工作機械における
移動体送り装置において、上記移動体の移動によって該
移動体と上記支持体との間に発生する摩擦力の中心点即
ち上記移動体の重心位置を通る垂直線が水平方向に移動
する量の約１／２の位置における該垂直線上の所定点を
設定し、この設定点に上記摩擦力に対する反力機構を設
けたことを特徴とする工作機械における移動体送り装置
。In a moving body feeding device for a machine tool in which a moving body moves on the sliding surface of a support and processes a workpiece with a tool attached to the moving body, the movement of the moving body causes the movement of the moving body and the support. A predetermined point on the vertical line is set at a position approximately 1/2 of the amount that the vertical line passing through the center of gravity of the moving body, that is, the center of gravity of the moving body, is moved in the horizontal direction. A moving body feeding device for a machine tool, characterized in that a reaction force mechanism against the frictional force is provided in the machine tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7825583A JPS59205247A (en) | 1983-05-06 | 1983-05-06 | Carriage feeder for machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7825583A JPS59205247A (en) | 1983-05-06 | 1983-05-06 | Carriage feeder for machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59205247A true JPS59205247A (en) | 1984-11-20 |
Family
ID=13656883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7825583A Pending JPS59205247A (en) | 1983-05-06 | 1983-05-06 | Carriage feeder for machine tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59205247A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02109664A (en) * | 1988-10-19 | 1990-04-23 | Hitachi Seiko Ltd | Fixing device for pallet |
| US20110217908A1 (en) * | 2010-03-02 | 2011-09-08 | Feng-Tien Chen | Coarse and Fine Grinding/Polishing Machine |
-
1983
- 1983-05-06 JP JP7825583A patent/JPS59205247A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02109664A (en) * | 1988-10-19 | 1990-04-23 | Hitachi Seiko Ltd | Fixing device for pallet |
| US20110217908A1 (en) * | 2010-03-02 | 2011-09-08 | Feng-Tien Chen | Coarse and Fine Grinding/Polishing Machine |
| US8403728B2 (en) * | 2010-03-02 | 2013-03-26 | Feng-Tien Chen | Coarse and fine grinding/polishing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110757283B (en) | Corner polisher | |
| JPH0672986B2 (en) | Contour reading device for eyeglass frames | |
| GB1127434A (en) | Improvements in grinding machines | |
| JPS6222745B2 (en) | ||
| JPS59205247A (en) | Carriage feeder for machine tool | |
| JPH07195266A (en) | Taper compensator of grinding machine | |
| JPH0616986B2 (en) | Grinding wheel repair device | |
| JPH0141466B2 (en) | ||
| JPH1133898A (en) | Grinding device | |
| JP3536929B2 (en) | Work table fore-aft movement | |
| JPH07218207A (en) | Surface shape measuring apparatus | |
| JPS6228365Y2 (en) | ||
| JP2533645Y2 (en) | Positioning device for centerless grinding machines | |
| JP2000237923A (en) | Machine tool | |
| CN209477879U (en) | A kind of horizontal cold carving machine | |
| GB2151955A (en) | Grinding machines | |
| JPH0584628A (en) | Thermal displacement compensator for machine tool | |
| JPH07218247A (en) | Coordinates measuring device | |
| JPH0546843Y2 (en) | ||
| JP2529270Y2 (en) | Wheel head position correction device | |
| US3611644A (en) | Micrometer finishing machine | |
| JPS6012172B2 (en) | Support mechanism for horizontal girder lifting screws | |
| JPH0369663B2 (en) | ||
| JPH0320688B2 (en) | ||
| JPH0711868Y2 (en) | Column structure of machining center |